---
title: "Low Desert Rock Supply Inc — Clean Truck Check, Desert Hot Springs, CA"
description: "Low Desert Rock Supply Inc in Desert Hot Springs, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/low-desert-rock-supply-inc-desert-hot-springs/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Low Desert Rock Supply Inc

Clean Truck Check tester in Desert Hot Springs, CA (Riverside County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 65005 Dillon Rd, Desert Hot Springs, CA 92240 |
| County | Riverside County |
| Phone | (760) 409-3125 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Low Desert Rock Supply Inc can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Alberto Vega in Desert Hot Springs, about 1 mile away. [See listing](https://ctcfinder.com/tester/alberto-vega-desert-hot-springs/).

## Clean Truck Check testers in Riverside County

Low Desert Rock Supply Inc is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In Desert Hot Springs itself there are 4 listed businesses, 4 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Low Desert Rock Supply Inc offer mobile Clean Truck Check testing?

Yes. Low Desert Rock Supply Inc says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Low Desert Rock Supply Inc test a 2012 or older diesel truck?

Low Desert Rock Supply Inc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Alberto Vega](https://ctcfinder.com/tester/alberto-vega-desert-hot-springs/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Low Desert Rock Supply Inc charge for a Clean Truck Check?

Low Desert Rock Supply Inc has not published prices with us; call (760) 409-3125 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Low Desert Rock Supply Inc a CARB-credentialed tester?

Low Desert Rock Supply Inc appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Alberto Vega](https://ctcfinder.com/tester/alberto-vega-desert-hot-springs/)** — Desert Hot Springs, CA 92240 — (760) 288-6591 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Ashton Hamerton-Kelly](https://ctcfinder.com/tester/ashton-hamerton-kelly-desert-hot-springs/)** — Desert Hot Springs, CA 92240 — (760) 673-6989 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Hayward Robinson](https://ctcfinder.com/tester/hayward-robinson-desert-hot-springs/)** — Desert Hot Springs, CA 92240 — (442) 599-1920 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[TDC Diesel Repair LLC](https://ctcfinder.com/tester/tdc-diesel-repair-llc-palm-springs/)** — Palm Springs, CA 92262 — (442) 666-9267 — 6 mi. Services: mobile testing, OBD testing.
- **[Nina Rochelle](https://ctcfinder.com/tester/nina-rochelle-whitewater/)** — Whitewater, CA 92282 — (562) 318-5248 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Crenshaw Clean Air Testing](https://ctcfinder.com/tester/crenshaw-clean-air-testing-cathedral-city/)** — 27405 Landau Blvd, Cathedral City, CA 92234 — (760) 960-3267 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.